Group the following substances correctly. Solids Liquids Gases [coffee powder, flower, oxygen, orange juice, steam, lotion, soap, water vapour]

Solids Liquids Gases Coffee powder, flower, soap orange juice, lotion oxygen, steam, water vapour In the above table solids, liquids, and gases are grouped correctly. Solids, liquids and gases are three states of matter . Solids have fixed shape and fixed volume, liquids have fixed volume but not fixed shape, and gases have no fixed shape and no fixed volume.

A beaker is filled with some water, after which 5 similar marbles are added into it. Why does the water level rise when the marbles are added?

The water level rises when the marbles are added because marbles are solids and solids occupy space and has a definite volume.

A beaker is filled with some water, after which 5 similar marbles are added into it. What is the volume of each marble in the beaker?

The volume of each marble in the beaker is = C h a n g e i n t h e v o l u m e o f t h e w a t e r N u m b e r o f m a r b l e s = 20 5 c m 3 = 4 c m 3 Therefore the volume of each marble in the beaker is 4 c m 3 .

The content in the jar is emptied as shown. In which state is its content?

Its content is in liquid state. In the figure, we can observe the liquid is flowing. Liquids have a definite volume but no definite shape, and they can flow. It takes the shape of the container in which they are poured.

Rani wants to change the water in her fish tank. Rani uses the set-up as shown below. What will happen to the water in the tank? Explain your answer?

Nothing will happen to the water in the tank. Water in the tank will remain as it is because water cannot flow from a lower level to a higher level. Since the rubber hose pipe is at higher level, the water will remain as it is in the tank.

Kamal wanted to prove that some solids do not have definite shape. He crushed a metal can with hammer and broke a glass plate into tiny pieces. After doing this he said solids do not have a definite shape. What can you say about his decision?

He crushed a metal can with a hammer and broke a glass plate into tiny pieces. But it is still solid, just in smaller pieces. A solid has a definite shape and volume, it will not change its shape no matter how much it has been moved around but its shape will change if a force is applied on it.